Now you got me looking in the books. No Cobalt or Vanadium are not on my list or in my books. I will be buying the book you listed today. I am taking an advanced fertilizer course on Thursday night. However this week is Spring Break. But next Thursday Dr. Lee will heard about this one. Big Big hint why am I offering $ 0.05
You can lead a Donkey to water but you can't make the Jackass Drink
"As Americans you have the right to be stupid." John Kerry
"Life is tough, but it's tougher when you're stupid.” John Wayne.